Originally Posted by
bikerjp
This may be of no help, but my crappy RS10 wheels do this too. Just one spot on the rim and worse as I slow. I took it to the lbs and was told it's normal and probably due to the weld seam or however the ends were joined when they were made. I would hope the kinlin rims are better made and don't have that issue, but maybe your rim seam is a bit more apparent.
Well The kinlin's have a pinned joint, not welded, and although I haven't taken note of where in the rotation they are pulsing, I know what a disjointed rim joint feels like, and this doesn't seem the same. It's easy enough to check when I'm at home and close to the bike, so I'll check that while I look for reflection differences (warping) at the nipples. I will say that I was quite surprised by the fact that I hadn't heard any reports of similar experiences here or elsewhere. Although I do remember finding something about it after the fact, once I was searching specifically for it. The rims were straight and true out of the box and I was able to get them very true within a really good tension tolerance.
When I first built them up and noticed the pulse, I (wrongly) assumed that it might improve with time, not get worse. It seems to be getting a bit worse and has become more bothersome lately.
-Jeremy